Method of making spinning rings



May 25 1926.

J. HIGGINSON METHOD OF MAKING SPINNING RINGS Filed June 4, 1924 Fig.1

Fig.3

Zia/ aviar it"atented May 25, 1926.

UNETEQ STATEQQB JOSEPH H IGGINSON, OF STOCKPORT, ENGLAND.

METHOD OF MAKING SPINNING RINGS.

Application filed. June 4,

This invention has for its object to pro vide simple and efficient meansfor ensuring that the rings of ring spinning, doubling and like machinesshall be truly or practically concentric when in position in the ringrail.

My invention comprises the improved method of producing rings andplacing the same in the ring rail according to which the ring is firstforced upon a taper mandrel so that the bore of the ring is made trulycircular, the ring being then ground whilst still upon the mandrel sothat its external periphery which fits into the ring rail is made trulycircular, and then fitted into the ring rail whilst still upon a mandrel, the latter being then withdrawn, after which the ring rail itselfresists any tendency of the ring to become excentric or to distort.

Referring to the accompanying sheet of explanatory drawings Figure 1 isa plan of part of a ring rail having a ring secured therein.

Figure 2 is a sectional end view through the ring and rail.

Figure 3 is an elevation of the ring, the rail being shown in section.

The same reference letters in the three views indicate the same parts.

In one convenient application of our invention, the ring a is made ofany usual cross section or it may be made with a tapered or conical partZ) on its exterior which is adapted to fit in a correspondingly taperedaperture in the ring rail 0. After the ring has been machined in theordinary way, it is forced upon a tapered mandrel, such as isillustrated by dotted lines at e in Figure 3, which makes the bore ofthe ring truly circular. The ring is now ground whilst still upon themandrel so that the exterior of the ring is made truly concentric withthe bore of the ring. The latter may now be removed from the mandrel,when it will again show the internal distortion which the mandrelcorrected, If desired, the point where the ring bulges outwards the mostmay now be marked and a groove be formed on the outside of the ring atthe said point.

The apertures for the rings in the ring rail are made of very greatcircular ac- 1924. 4 Serial No. 717,880.

curacy. Each ring is again placed upon a mandrel to make its bore trulyconcentric when the external periphery also becomes concentric due tothe previous grinding process before described. The rings are thenforced into the rails and thereafter the mandrels are withdrawndownwards. The ring rail now resists any tendency of thering to becomeexcentric or to distort. The set screw is screwed against the groovedpart of the ring periphery and removes any inaccuracy in the ring due tothe natural tendency to bulge at the part in question. The said setscrew also holds the ring in place.

By the employment of my invention, I find that I can provide ringshaving practically uniform circular bores which ensures a more efficientand uniform action of the traveller (not shown).

1. A method of producing rings for ring spinning, doubling and likemachines con sisting in first machining the rings in the usual manner,then forcing the machined ring upon a tapered circular mandrel so thatthe bore of the ring is made truly circular, grinding the periphery ofthe ring while the latter is on the mandrel to make the periphery trulyconcentric with the bore of the ring, and afterwards forcing the ringwhilst upon a mandrel into the aperture of a ring rail, whereby when thelast mentioned mandrel is withdrawn from the ring, the latter is heldagainst distortion by the rail.

2. A method as claimed in claim 1 in which the bore of the aperture inthe ring rail is coned and in which the periphery of the ring is groundto substantially conical form so that it will snugly fit into saidaperture. I

3, A method as claimed in claim 1 having the added steps of formng agroove in the periphery of the ring at the point where the ring tendsnaturally to bulge or distort the most when the mandrel is withdrawntherefrom, and placing a screw in the ring rail to engage said groove.

In testimony whereof I have signed my name to this specification.

JOSEPH HIGGINSON.

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